This is from August of 2011, but I think it's still important to post to get 'out there'. The camshaft actuators generally fail due to low or dirty oil, which is related to the Oil Consumption issues that many Chevrolet Equinox and GMC Terrrains have. From the recall notice:
This notice is sent to inform you that General Motors is conducting a voluntary emission recall that includes your vehicle.
Reason For This Recall: The camshaft position actuator solenoid certain 2011 Buick LaCrosse, Regal; Chevrolet Equinox; and GMC Terrain vehicles equipped with a 2.4L gas engine may stick, resulting in the illumination of the malfunction indicator light, rough idle, poor driveability, and/or possible stalling at low throttle opening.
What Will Be Done: Your GM dealer will reprogram the engine control module and replace the camshaft position actuator solenoid valves. This service will be performed for you at no charge.
What You Should Do: Please contact your GM dealer as soon as possible to arrange a service date and to assure parts are available. Instructions for making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be needed to schedule, process, and repair your vehicle.
The complete recall notice is accessible here.
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